Topography and areas of natural shelter were both of great importance in planning any military campaign. To this end, inclines and woodland are clearly indicated on this drawing. The main communication routes are highlighted in yellow. Some roads have been pin-marked along their lengths, proof that the draughtsman used measuring dividers to plot the exact course of the roads. The dates of draughting and the scale of the drawing have been recorded in pencil on the bottom right of the sheet.